Finding the Third Proportional to 42,370 and 90,556

Step by Step Solution

1. Step 1: Write the proportion equation
   42,370 : 90,556 = 90,556 : x
2. Step 2: Convert to fraction form
   42,370/90,556 = 90,556/x
3. Step 3: Cross multiply
   42,370x = 90,556 × 90,556
4. Step 4: Simplify right side
   42,370x = 8,200,389,136
5. Step 5: Solve for x
   x = 8,200,389,136/42,370
6. Step 6: Final answer
   x = 193,542.34